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- Fisk Descender™ is the simplest, most effective descent control system ever designed - it's easy to trust a system designed for durability, thermal capacity and smooth flow
- Gentle flow for 19" of working line to pass through the descender
- Large radius for smoother descent
- Less wear to the working line
- Reduction in rope hockling and torsional twist
- Durable 304 stainless steel construction
- Meets or exceeds all industry requirements including OSHA and ANSI
Made from 304 stainless steel and investment cast for strength, the device is not only strong, it is beautiful. This design offers maximum flexibility for the application with one-piece simplicity. Basic training procedures are combined with the purchase of our VHS video, it is designed to offer assistance in training the user for various techniques used in descending.
The patented design offers gentle flow for 19 inches of working line to pass through the descender over a larger radii found in other products on the market. This design offers less wear to the working line, reduction in rope hockling, and torsional twist. The 304 stainless steel was chosen because of its durability and greater thermal capacity over other materials (ie. aluminum), thus reducing the temperature increase of the unit during a descent.
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Fisk Descender:
304 Stainless Steel, Capacity = 440 lbs., Weight = 1 lb. 13 oz.
1.0 APPLICATIONS:
1.1 PURPOSE: DBI/SALA's Fisk Descender is intended to be used as a component of a rope descent system. This equipment is used for applications that include repelling, work positioning, and rescue
operations. The maximum working load with this equipment is 440 lbs.
NOTE: Independent back-up fall protection systems are typically required when using the Fisk Descender. The back-up or secondary fall protection system is not required in applications where the Fisk Descender is used only to retrieve personnel (i.e. emergency rescue operations).
1.2 LIMITATIONS: The following application limitations must be considered before using this product:
A. CORROSION: Do not leave this equipment for long periods in environments where corrosion of metal parts could take place as a result of vapors from organic materials. Use caution when working around sewage or fertilizer because of their high concentration of ammonia, which is very corrosive. Use near
seawater or other corrosive environments may require more frequent inspections or servicing to ensure corrosion damage is not affecting the performance of the product.
B. CHEMICAL HAZARDS: Solutions containing acids, alkali, or caustic chemicals, especially at elevated temperatures, may cause damage to Fisk Descender systems. When working with such chemicals, frequent inspection of the entire Fisk Descender must be completed. Consult DBI/SALA if doubt exists concerning using this equipment around chemical hazards.
C. HEAT: In general, Fisk Descender systems are not intended for use in environments where incendiary sparking could cause an explosion or fire. Use of this equipment is prohibited where there
exists the possibility of the rope coming into contact with power lines, live cables, etc. Consult the manufacturer for special applications of this equipment. Do not use where air temperatures
exceeds 150°F (66°C). Nylon and polyester fibers start to
degrade at 260°F (127°C).
D. CAPACITY: The Fisk Descender is designed for use by one person only with a combined weight (person, clothing, tools, etc.) of 440 lbs. maximum. In emergency rescue applications, up to
two people may be attached to the Fisk Descender. The working line used must be reviewed before use to determine compatibility.
E. DESCENT HEIGHT: The Fisk Descender must not be used for descending from heights exceeding 300 ft. (91m).
F. TRAINING: This equipment is intended to be installed and used by persons who have been properly trained in its correct application and use. 1.3 Refer to national consensus standards (including ANSI A10.14 and ANSI Z359.1) applicable local, state, and federal (OSHA) requirements governing this equipment for more information on personal fall arrest systems and associated system components.
SYSTEM REQUIREMENTS:
2.1 COMPATIBILITY OF COMPONENTS: DBI/SALA equipment is designed for use with DBI/SALA approved components and subsystems only. Substitutions or replacements made with nonapproved
components or subsystems may jeopardize compatibility of equipment and may effect the safety and reliability of the complete system. The Fisk Descender rope has been specially selected to provide the user with the maximum performance and safety. Do not substitute with standard safety rope. See section 2.5 for rope selection and specifications.
2.2 COMPATIBILITY OF CONNECTORS: Connectors are considered to be compatible with connecting elements when they have been designed to work together in such a way that their sizes and shapes
do not cause their gate mechanisms to inadvertently open regardless of how they become oriented. Contact DBI/SALA if you have any questions about compatibility. Connectors ( hooks, carabiners, and D-rings) must be capable of supporting at least 5,000 lbs. (22kN). Connectors must be compatible with the anchorage or other system components. Do not use equipment that is not compatible. Non-compatible connectors may unintentionally disengage. See Figure 2. Connectors must be compatible in size, shape, and strength. Self locking snap hooks and carabiners are required by ANSI Z359.1 and OSHA.
2.3 Making Connections: Only use self-locking snap hooks and carabiners with this equipment. Only use connectors that are suitable to each application. Ensure all connections are compatible in size,
shape and strength. Do not use equipment that is not compatible. Ensure all connectors are fully closed and locked. DBI/SALA connectors (snap hooks and carabiners) are designed to be used only as specified in each product’s user’s instructions.
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